Accessing AndroidX.AppCompat.Widget.Toolbar in NavigationPage

[AlleSchonWeg]

Hi,
i want to draw a separator line between my content and my TitleView on Android. In Xamarin i created a custom NavigationPageRenderer, override OnViewAdded and if the view is AndroidX.AppCompat.Widget.Toolbar i add a Drawable to the ToolBar Foreground.
How can i do this with MAUI? I tried Microsoft.Maui.Handlers.NavigationViewHandler.Mapper.AppendToMapping(...) but i can't find the native Toolbar.

[Pastajello]

You can search for the appbar on the activity.
FindViewById(Resource.Id.navigationlayout_appbar);.
First child of it should be a MaterialToolbar.

[AlleSchonWeg]

Thank you. It works:
Platform.CurrentActivity.FindViewById(Resource.Id.navigationlayout_appbar)